WO2019125312A1 - Noyau pouvant se désintégrer dans l'eau - Google Patents

Noyau pouvant se désintégrer dans l'eau Download PDF

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Publication number
WO2019125312A1
WO2019125312A1 PCT/TR2017/050687 TR2017050687W WO2019125312A1 WO 2019125312 A1 WO2019125312 A1 WO 2019125312A1 TR 2017050687 W TR2017050687 W TR 2017050687W WO 2019125312 A1 WO2019125312 A1 WO 2019125312A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
cardboard
core
weight
water disintegrable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/TR2017/050687
Other languages
English (en)
Inventor
Fatos BASBUG
Semih YESILKIR
Hale AKYILDIZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hayat Kimya Sanayi AS
Original Assignee
Hayat Kimya Sanayi AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hayat Kimya Sanayi AS filed Critical Hayat Kimya Sanayi AS
Priority to PCT/TR2017/050687 priority Critical patent/WO2019125312A1/fr
Publication of WO2019125312A1 publication Critical patent/WO2019125312A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/16—Paper towels; Toilet paper; Holders therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/25—Cellulose
    • D21H17/26—Ethers thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/25—Cellulose
    • D21H17/27—Esters thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape

Definitions

  • the present disclosure relates to a novel water disintegrable core to be used as a support for a roll of paper, especially for a toilet paper.
  • the present disclosure relates to a process for producing such a water disintegrable core.
  • Papers for sanitary or domestic use are usually packaged as core-comprising rolls.
  • Said paper rolls such as toilet paper roll or paper towel roll, are formed by winding the paper around a core that is generally made of cardboard.
  • Said core is necessary to give robustness to the toilet paper roll to avoid deformations during production, storage, transport and use.
  • Another important feature of a water disintegrable core is its disintegration time in water. Said cores must quickly disintegrate on contact with water in order to avoid the blockage of toilet drain lines.
  • Water disintegrable cores which are suitable for throwing away down the toilet bowls are known to date.
  • US 2010,167,889 describe a core which disintegrates in water, therefore can be thrown away into the toilet.
  • the core is obtained by winding of tissues, impregnated with starch.
  • tissue layers are required to produce a core having sufficient stiffness.
  • the application of excessive amounts of starch to the tissue layers and high energy consuming drying process makes the production process unfavourable.
  • the present invention aims to solve the problems raised above, to provide a water disintegrable core which can be thrown directly into toilet bowls and has the advantage of being relatively inexpensive.
  • This object is solved in the present application by using at least one cardboard sheet which is made of unrefined short cellulose fibers and free of a binding agent for the preparation of a water disintegrable core.
  • the objectives of the invention are successfully achieved by using at least one cardboard sheet which is made of unrefined short cellulose fibers having an average length of between 0.4-2mm.
  • the water disintegrable core disintegrates in water within 3 minutes, and preferably within 1 minute according to core disintegration time test method by mechanically stirring in a vessel containing water.
  • the objectives of the invention are successfully achieved with a water disintegrable core with a basis weight of between 100 and 600 g/m 2 , preferably between 200 and 450 g/m 2 .
  • the water disintegrable core is made of a cardboard sheet which is made of unrefined short cellulose fibers and which further comprises alkali salts of carboxymethyl cellulose, preferably sodium salt of carboxymethyl cellulose.
  • the object of the present invention is further to provide a process to prepare said water disintegrable core comprising following steps:
  • the water disintegrable core is made of one or more cardboard sheets, preferably containing two cardboard sheets adhered with an adhesive one on the top of the other.
  • obtained cores can be used as a support in paper product rolls such as toilet paper rolls, paper towel rolls, or the like.
  • FIG. 1 A water disintegrable core of the present invention
  • a water disintegrable core to be used as a support for a paper roll which quickly disintegrates upon contact with water can be produced by using at least one cardboard sheet which is made of unrefined short cellulose fibers and free of a binding agent in its preparation process.
  • the water disintegrable core to be used as a support for a paper roll is produced by using at least one cardboard sheet which is made of unrefined short cellulose fibers having an average length of 0.4-2 mm and which is free of a binding agent.
  • Short cellulose fibers are defined according to the present application as cellulose fibers having an average of 0.4 - 2 mm, preferably 0.5 - 1.5 mm, and more preferably 0.6- 1 mm of length. Said fibers are not refined, milled or crushed mechanically.
  • the cellulose fibers in the paper forming industry used in a method according to the present invention are not subjected to a step of refining. We believe that refining increases the surface area between cellulose fibers resulting in an increase in bonding capabilities of said fibers, which is not a desired effect in case of a disintegrating core product.
  • the water disintegrable core of the present invention disintegrates in water within 3 minutes, preferably within 1 minute by mechanically stirring in a vessel containing water in accordance with a core disintegrating time test method as described in the specification herein.
  • the water disintegrable core of the present invention disintegrates in water to an extent not clogging the waste water pipeline when it is thrown and flushed into the toilet bowl.
  • a method for producing a core which disintegrates in water comprises the following steps; a- providing unrefined short cellulose fibers, b- disintegrating cellulose fibers in water to form a pulp, c- removing water from the pulp with wet-press to a water content of less than 60% by weight, d- removing remaining water until obtaining 95% solids containing aqueous mixture by weight by means of drying cylinders to obtain cardboard sheets , e- slicing obtained cardboard sheets, f- spirally winding and adhesively bonding said cardboard sheet to form a hollow tube, g- cutting of said hollow tube to form the water disintegrable core.
  • the core produced by a method according to the present invention which can disintegrate in water has a basis weight of between 100 and 600 g/m 2 , preferably between 200 and 450 g/m 2 .
  • the method comprises the step of adding an aqueous solution of alkali metal salt of carboxymethyl cellulose to the pulp, wherein the solution has a concentration of at least 0.1 % by weight.
  • alkali metal salts of carboxymethyl cellulose helps to improve the stiffness characteristics of the water disintegrable core.
  • alkali metal salt of carboxymethyl cellulose is sodium carboxymethyl cellulose.
  • a method for producing a core which disintegrates in water comprises the following steps; a- providing unrefined short cellulose fibers, b- disintegrating cellulose fibers in water to form a pulp at 4-5% consistency in water by weight, c- adding an aqueous solution of an alkali salt of carboxymethyl cellulose to the pulp, d- removing water from the pulp with wet-press to a water content of less than 60% by weight, e- removing remaining water until obtaining 95% solids containing aqueous mixture by weight by means of drying cylinders to obtain cardboard sheets, f- slicing obtained cardboard sheets, g- spirally winding and sidelongs adhesively bonding said cardboard sheets to form a hollow tube, h- cutting of said hollow tube to form the water disintegrable core.
  • Pulp consistency or concentration is defined as the weight in grams of oven-dry fiber in 100 grams of pulp-water mixture.
  • the weight ratio of sodium salt of carboxymethyl cellulose solution to the unrefined short cellulose fibers is at least 0.1 % by weight in dry state.
  • the water disintegrable core comprises two or more cardboard sheets adhered with an adhesive one on the top of the other.
  • a method for producing a core which disintegrates in water comprises the following steps; a- providing unrefined short cellulose fibers, b- disintegrating cellulose fibers in water to form a pulp at 4-5% consistency in water by weight, c- adding a 1 % aqueous solution of alkali metal salt of carboxy methyl cellulose to the pulp, d- removing water from the pulp with wet-press to a water content of less than 60% by weight, e- removing remaining water until obtaining 95% solids containing aqueous mixture by weight by means of drying cylinders to obtain cardboard sheets, f- winding the cardboard sheets to form a cardboard coil, g- slicing said cardboard coils into coils having same or different widths, h- adhesively bonding two of said coils one on top of the other to obtain a cardboard coil with two cardboard sheets, and i- immediately spirally winding of said cardboard coil with two cardboard sheets to form a hollow tube, i- cutting of said hollow tube
  • a core produced according to a method of the present invention disintegrates in water faster than a similar standard core of the prior art.
  • the term“similar standard core” is understood to mean a core having substantially the same diameter, substantially similar weight and the same length as the core of the invention.
  • the same core has not been specifically treated for becoming a fast disintegrating core and disintegrates in a very long time period which causes clogging of the drain lines.
  • a core produced according to a method of the present invention disintegrates in water in similar time period and shows similar mechanical strength properties as the water disintegrating cores produced with extra starch.
  • Alkali salt of carboxymethyl cellulose used in a method according to the present invention is soluble in cold water.
  • the molecular weight of sodium salt of carboxymethyl cellulose is from about 150,000 MW; molecular weight to about 400,000 MW, and preferably from about 250,000 MW to about 3000,000 MW.
  • viscosity of the sodium salt of carboxymethyl cellulose is from about 100 MPa-s to about 1000 MPa-s, and preferably from about 300 MPa-s to about 800 MPa-s, and more preferably from about 400 MPa-s to about 700 MPa-s of %2 aqueous solution of alkali metal salt of carboxymethyl cellulose at 25°C.
  • the degree of substitution of the sodium salt of carboxymethyl cellulose is from about 0.6 to about 1.2, and more preferably about 0.6 to 1.
  • the pH value of of sodium metal salt of carboxymethyl cellulose is 5 or more.
  • the cellulose fibers used in a method according to the present invention have a fiber length of 0.4 - 2 mm, preferably 0.5 - 1.5 mm, and more preferably 0.6- 1 mm.
  • Cellulosic fibres suitable for making the core of the present invention may include: hardwood fibres, such as Eucalyptus, maple, birch, aspen, redgum or the like.
  • Preferred fibre type of the present invention examples is eucalyptus tree fibres.
  • a polyvinyl acetate based adhesive is used in the manufacturing of core for adhering cardboard sheets to one another.
  • the adhesive used in the present application may comprise, PVA based copolymer adhesives, starch, polyvinyl alcohol, and dextrin or mixtures thereof.
  • Preferred adhesive is polyvinyl acetate.
  • the method of the present invention product may comprise application of additional agents, such as cleaning agents, disinfectants or fragrances. These additives can be applied by any methods known from state of the art.
  • the water disintegrable core produced by a method according to the present invention can be used as a support in paper product rolls such as toilet paper rolls, paper towel rolls, or the like.
  • 285 gr of eucalyptus cellulose fibers are disintegrated under stirring in 2 It of water at 12,5% consistency at 10000 RPM to obtain a pulp having fibers with an average length of 0.7 mm.
  • a 1 % aqueous solution of sodium salt of carboxymethyl cellulose is prepared by adding 28,5 gr of water to 0,285 gr of sodium salt of carboxymethyl cellulose. Obtained aqueous solution of sodium salt of carboxymethyl cellulose is added to the pulp.
  • the pulp mixture is diluted to 4,7% consistency by adding 5750 ml of water. 638 ml of the obtained pulp is diluted to 0,2% consistency by adding 15000 ml of water.
  • Obtained cardboard sheet is cut to appropriate size, spirally winded around itself and sidelongs adhesively bonded with a polyvinyl acetate based adhesive to form the hollow tube. Cutting of hollow tube in appropriate size delivers the water disintegrating core of the present invention with only one cardboard sheet.
  • Cardboard sheets are produced according to Example 1 in coils.
  • One cardboard sheet coil is cut in 85 mm width and another cardboard sheet is cut in 90 mm width.
  • One side of a cardboard sheet is smeared with a polyvinyl acetate based adhesive. Said coils are adhesively bonded to each other one on the top of the other to obtain a cardboard coil with two cardboard sheets. Immediately thereafter said cardboard coil is spirally winded with subsequent forming of a hollow tube. Cutting of the hollow tube in appropriate size delivers the water disintegrating core of the present invention with two cardboard sheets.
  • Ex 1 and Ex 2 core disintegration times are very similar and show close similarity with the starch containing disintegrating core.
  • Starch containing core sample is provided from market. These cores are prepared by impregnation of starch solutions into cellulose web. Regular cores are the ones that made with the regular cellulose web. As regular cores made from this material, these are not disintegrating even within a few days and therefore prone to clogging the sewer pipe.
  • a ply of 5x2 cm dimension is clamped by two clamps of the test device and a drawing force is applied onto the ply.
  • the sample cores of present invention are compared with regular core with regard to its physical strength. According to the results obtained the present invention samples are sufficiently strong in comparison to the results obtained regulare core and fulfill market requirements.
  • Cardboard Type Weight j Thickness
  • the present invention samples are sufficiently strong against vertical and horizontal pressure applied to a core during manufacturing, storage and transportation, therefore fulfill market requirements.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Sanitary Thin Papers (AREA)

Abstract

La présente invention concerne un nouveau noyau désintégrable dans l'eau et un procédé de production dudit noyau désintégrable dans l'eau, lequel est utilisé en tant que support pour un rouleau de papier, en particulier pour un papier toilette. Lesdits noyaux désintégrables dans l'eau sont exempts d'agent de liaison et constitués de fibres de cellulose courtes non raffinées. Lesdits noyaux désintégrables dans l'eau peuvent être jetés dans la cuvette des toilettes et ne provoquent pas de bouchage des tuyaux de vidange. En outre, la présente invention concerne un noyau désintégrable dans l'eau comprenant un sel de métal alcalin de carboxyméthylcellulose. En outre, la présente invention concerne un procédé de production d'un tel noyau désintégrable dans l'eau.
PCT/TR2017/050687 2017-12-22 2017-12-22 Noyau pouvant se désintégrer dans l'eau Ceased WO2019125312A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/TR2017/050687 WO2019125312A1 (fr) 2017-12-22 2017-12-22 Noyau pouvant se désintégrer dans l'eau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2017/050687 WO2019125312A1 (fr) 2017-12-22 2017-12-22 Noyau pouvant se désintégrer dans l'eau

Publications (1)

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WO2019125312A1 true WO2019125312A1 (fr) 2019-06-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2820893C1 (ru) * 2023-12-29 2024-06-11 Общество С Ограниченной Ответственностью "Эссити" Волокнистая композиция картона для получения диспергируемого в воде листа картона, диспергируемый в воде лист картона на ее основе и диспергируемая в воде втулка для рулона туалетной бумаги

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758695A2 (fr) * 1995-08-09 1997-02-19 Japan Tobacco Inc. Feuille dispersible dans l'eau, et cigarette l'utilisant
WO2000044982A1 (fr) * 1999-01-29 2000-08-03 G Enterprises, Inc. Procede et formule chimique permettant d'obtenir des articles rigides biodegradables
US20100167889A1 (en) 2007-06-14 2010-07-01 Georgia-Pacific France Core intended to be used as a support for a roll of paper
US20110287273A1 (en) * 2008-12-18 2011-11-24 Georgia-Pacific France Method for making a sheet of degradable paper, use of said sheet for making a mandrel defining a roll carrier, degradable paper sheet, and mandrel including at least one of said sheets
JP2017132612A (ja) * 2016-01-29 2017-08-03 日本製紙クレシア株式会社 巻芯紙管、及びそれを備えたシートロール

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758695A2 (fr) * 1995-08-09 1997-02-19 Japan Tobacco Inc. Feuille dispersible dans l'eau, et cigarette l'utilisant
WO2000044982A1 (fr) * 1999-01-29 2000-08-03 G Enterprises, Inc. Procede et formule chimique permettant d'obtenir des articles rigides biodegradables
US20100167889A1 (en) 2007-06-14 2010-07-01 Georgia-Pacific France Core intended to be used as a support for a roll of paper
US20110287273A1 (en) * 2008-12-18 2011-11-24 Georgia-Pacific France Method for making a sheet of degradable paper, use of said sheet for making a mandrel defining a roll carrier, degradable paper sheet, and mandrel including at least one of said sheets
JP2017132612A (ja) * 2016-01-29 2017-08-03 日本製紙クレシア株式会社 巻芯紙管、及びそれを備えたシートロール

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2820893C1 (ru) * 2023-12-29 2024-06-11 Общество С Ограниченной Ответственностью "Эссити" Волокнистая композиция картона для получения диспергируемого в воде листа картона, диспергируемый в воде лист картона на ее основе и диспергируемая в воде втулка для рулона туалетной бумаги

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